Driving mechanism.



No. 67I,495. Patented Apr. 9,1901.

W. SCOTT. DRIVING MEcH'ANlsm,

(Application led July 29, 18i)'7.`,

2 Sheets-Sheet (No Modal.)

w.' scoTT. DRIVING MECHA-NISM.

`Applcaon Bled July 29, 18912 .No. 6`7I,495. A Y Patented Apr. 9, |90I.

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EATENT WALTER SCOTT, OF PLAINEIELD, NEV JERSEY.

DRIVING MECHANISNI.

i SPECIFICATION forming part of Letters Patent No. 671,495, dated April9, 1901.

Application tiled July 29,1897. Serial No. 646,423. (No model.)

To (1,7/7, whom it may concern:

Beit known that I, WALTER SCOTT, a citizen of the United States, and aresident of Plainfield, in the county of Union and State of New Jersey,have invented certain new and useful Improvements in Driving Mechanism,of which the following is a specification.

My present invention relates to mechanism for transmitting power ormotion.

One object of the invention is to vary the speed of the transmittedmotion and to reverse the direction of the same.

Another object is to stop the driven members or parts quickly, and ifneed be to reverse the motion thereof.

Other objects will hereinafter appear more fully.

To these ends one form of the invention includes two parallelindependently-rotatable members, as disks or dat rings, a drive-shaftextending across and beyond said members, outwardly-daring iianges atthe edges or rims of said members, a cone drive-wheel on andmovable'along but rotating with said shaft and placed thereon at oneside of the centers of rotation of said members for engagement with saidflanges, a cylindrical drive-wheel also on and movable along butrotating with said shaft for engagement with said disks or rings, andmeans for transmitting the power or motion of one disk or ring to theother disk or ring or combining said motions into one.

The invention further includes two parallel independently-rotatabiedriven members, a driver for engagement With said members to drive them,mechanism for varying the distance between said members and thus varyingthe pressures thereof on the driver, and means for combining the motionsor power transmitted by said members on asingle element. ln some cases Iprovide two drivers, one at either side of the centers of theindependently-rotatable members, and provide mechanism for engaging themsingly with the said members, as by so placing them on the shaft and soconnecting them that they move as one, at such a distance apart thatboth cannot be engaged at one and the same time with the members, or bymoving them independently of each other along the shaft. I may alsoprovide a suitable brake in order to stop the driven parts in additionto taking off the pressure between the driver and the disks or rings orother members driven thereby, as such brake is Very useful in case of anemergency stop.

The invention also includes other features, as will hereinafter morefully appear. I may say, however, that the reversal of motion may be hadWhen a single driver is employed by moving the driver along its shaftpast the centers of motion of the driven members. Also I may have anumber of driveshafts and driversv thereon; but in such case the shafts,except one, cannot extend across the disks and beyond the same. I maytake oif the motion from the disks or rings or shafts driven thereby orintegral therewith at one or more places.

The preferred form of my present invention is shown in the accompanyingdrawings, forming part of this specification, in which- Eigure l is aside view, partly in section, on the plane indicated in Fig. 2 by theline l 1, showing a drive-shaft, a cone, and a disk drive-wheel thereonand rotating therewith, and mechanism for connecting and moving saiddrivers along the shaft and other parts. Fig. 2 is a view lookingdownward in Fig. l, partly in section, on the plane indicated iu Fig. lby the line 2 2.

Referring to the drawings, I provide a casing or frame F, which is asnearly as possible dust-proof when the invention is to be used in thepropulsion of vehicles or when it is desired to exclude dust or thelike, and mount the working parts therein in appropriate manner. Iprovide suitable bearings 2 3 for the hubs or shafts 4 6 ot thefriction-disks a Z9 at opposite sides of the casing or frame E. In theparticular case shown these hubs are made hollow and have the shafts 7 8fastened therein. The shafts 7 8 are not essential to the invention,however. The disksa b are respectively provided with the flanges A B,which are away from the opposing disk. For convenience of description Ishall call this flaring outwardly. The flanges may be attached to thedisks d b, as by riveting; but I prefer to make them integral with theirrespective disks orrings. Thisis theconstruction shown. In order toprovide that the disks a b may be movable quickly toward and from eachother, I provide a bearing for the outer end of each of their hubs 4 6'or the shafts 7 8, or either, as the case may be, which bearings arepreferably made so as to be quickly released or applied. In one instanceI show a ball-bearing 9, made up of two disks or bearings with the ballsbetween them, for the end of the shaft 7. This bearing9 is inserted inthe bearing in the frame F for the shaft 7, one of the disks bearingagainst the end of the shaft 7, as shown. A screw 10 passes through andengages with the internally-screw-threaded sleeve 11 and is providedwith a jam-nut '12 to lock it thereto. The sleeve 11 is provided with anexternal screw-thread 13, which engages with the internal screw-threadof the sleeve 14, which is attached to the frame F by suitable means, asthe ianges shown and bolts and. nuts. The end of the screw 10 pressesagainst the disk of the bearing 9. It is obvious that a similararrangement may be used with the shaft 8; but I have shown anotherarrangement. Thus the end of the hub 6 bears against a disk forming partof a ballbearing 15, which is or may be similar in many respects to thatshown for the shaft 7, the only essential difference being that theshaft 8 passes through the bearing 15. The bearing 3 has the sleeve 16bolted or otherwise secured to it, the said sleeve having its opening inline with the opening in the bearing and tting on the hub 3, as shown.The sleeve 16 is provided with an external screwthread 17, with whichthe internal screwthread of the sleeve 18 engages. The sleeve 18 isclosed at one end, through which end two or more screws 2O pass and bearagainst the outer ring of the ball-bearing 15. These screws 20 engagewith screw-threaded openings in the said end and are provided withjam-nuts 21 for locking them. loose washers maybe used between the ends/of the screws 2O and the ring of the bearing 15. The sleeve 18 isprovided with 'a lever or arm 19, which extends through a suitableopening in the casing F2, bolted or otherwise secured to the'casing orframe F.

'The sleeve 11 is providel with an arm or lever 27, which is or may beparalled lto and of equal length with the arm 19 above named. The arm 19is pivotally connected at 23 with a link or pitman 22, which at its y'other' :end 24 is similarly connected with the arln l25 of a rock-shaft26, and the arm `27 is articulated, as at 28, to the link or pi-tman rod29, which at its other Vend 30 is similarly connected to the arm 31 of'the rock-shaft 26. This rock-shaft is suitably journaled inlbearifn'gs'on a'suitable hanger. (Nfotshown.) The screws 13 17 are soarranged that the motion of the rock-shaft 26 in one direction serves, ithrough 'thedescribed connections, to simultaneously move the screws lO20 away from'y the ball-bearings 9 15, while the motion of the shaft 26in `the jother direction serves, through the same connections, to movesaid -screws against said bearings. A suitable le'- One or more ver (notshown) ,may be employed for rocking the shaft 26 for the purposes named.

The drive-shaft 5 is journaled at one end, as at 32, in the frame F,extends across the faces ofthe disks o, b, and is shown as coupled at 33to the shaft 34 of an electro (or other) motor M, or the shaft 5 may bejournaled in the frame at both ends and be driven by any suitable motoror power. Forengagennent with the flaring flanges AB, I provide theshaft 5 with a cone drive-wheel G, which is connected, so as to rotatetherewith, as by a spline or feather, (not shown,) but which is capableof being moved along the shaft 5, and with a cylindrical or diskdrive-wheel H, which is connected to the shaft in a similar manner. Thewheel G has a hub 35, which is provided with a circum-4 ferential groove36, and the wheel H has a hub 37, which is provided with a like groove38. Extending between the disks a b and suitably journaled in the frameF, so as to have motion of rotation only, is the screwrod 39. This rod`39 may have one end, as 40, reduced to form a journal which has abearing in the frame F and may have a collar 41 fast thereon inside theframe F, near its other end, and have a bevel-gear 42 lthereon outsidethe said frame, and in this way be confined so as to be capable ofrotation only.` A screwnut 43 engages with the screw-rod 39 and is fastto a bar K, which eXtendspar-allel `with the shaft 5, as shown. The barK-is-provided at each end with the forks 7.o, fast thereto, which engagewithl the grooved hubs 35 37 aforesaid. The wheels G Hare placed at sucha distance apart that both ca nnot be in engagement with their coactingparts (disks a b and flanges A B) at one and the Sametime. Forconvenience in rotating the rod 39 I 'provide the bevel-gear 42 thereon,with which meshes another bevel-gear 43, which is fast on -the shaft 44,journaled in the frame F or a projection 45 therefrom. A hand-wheel 46or other lever on the shaft 44 serves to rotate i the shafts 44 39 andmove the nut 43 back and forth on the rod 39,V and so move the wheels-GH into and out of engagement with their coacting parts aforesaid.

Inorder to transmit the motion of one member, as either disk a or diskb, to the other member, I provide one or more transmitters, as the conedrollers 47, which are suitably jour-naled on or carried by the frame F,as by the screw-rods 48, which engage with threaded openings in theframe and are locked inpplace b v the .jam-nuts 49. These coned rollers47 bear-against the flanges A B. Other means for combining the motionsof the disks a l) with each other `may be employed.

The frame or casing F is shown as having flanges 50, by means of whichit may be secured to a ceiling or to a vehicle-frame or other support.

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transmitted to a bevel-gear 52 and shaft 53 and thence be employed asdesired.

I have hereinbefore spoken of sometimes employing a brake mechanism, andI show one such mechanism in the drawings. Thus I sometimes provide adriven part, as the shaft 8, with a friction rim or wheel 54 and pivot alever 55 to the frame or connected part, as at 56. A friction-strap 57is connected at its ends to the said lever at 56 58. A link or pitmanrod 59 is pivotally connected at one end to the lever 55, and at itsot-her end 60 to the arm 61 of the rock-shaft 2b' aforesaid. Onmovingthe rock-shaftl 26 in the direction of the arrow m the brake isapplied, while at the same time the endwise pressures upon the shafts 78 are taken off through the partial rotation of the screws 13 18. Obviously these pressures are the more quickly removed by making the screws13 18 of coarse or quick pitch.

I remark that the use of the coned roller or driver G is not essential,as it and the iianges A B may be dispensed with for some of the purposesof my invention. In such case there may be a disk driver substituted forthe driver G, so as to have the speed va- :riable both backward andforward. With the construction shown in the drawings and hereinbeforedescribed variable speed in but one direction is secured. I also remarkthat by the use of the brake mechanism shown and the reversal of thedirections of motion of the disks a quick or emergency stop maybe made.In order to do this, however, the brake mechanism must be operated fromsome other part than the shaft 26 in the case shown. In case themechanism for taking oif the pressures on the ends of the shafts of thedisks a b is not used (and it is not essential in all cases that itshould be usedlthe shaft 26 becomes the means shown for operating thebrake. In the case shown the quick or emergency stop is brought about bytaking off the endwise pressures from the shafts 7 8 and by applying thebrake simultaneously or successively.

I have not represented any framing further than that necessary for theparts shown, for, asindic'ated hereinbefore, the invention is notconfined to its use in any one class of mechanism or machinery; nor do Ilimit my claims to the specific forms of the invention hereinbeforementioned and partly illustrated inthe d rawings, for I am aware thatthe form thereof may be varied in many ways without departing from thespirit of my invention.

Iremark that a central bearing for the shaft 5 may be obtained by meansof a bearingblock supported in the holloWs G2 in the ends of the disks ab, or this block may be supported from the frame F in any suitable way.

In the form of the invention shown the disks a b are respectivelyprovided with bevelss, which make obtuse angles with the diskfaces.These bevels are circular and concentric Withrthe disks and are placedcentrally thereof. The drive-wheel H is shown as provided with a conedpart which is designed for frictional engagement with the said bevels st when the Wheel H has been moved inward far enough to permit thereof.

For convenience of reference and for brevity I shall use the term diskor disksin the claims in the general sense of a flat part of circularform, not intending, however, to limit myself toV what is commonlycalled a disk, but intending to include within the term not only the common form, but also rings or annulus or the like. I also remark that thedrive-Wheels may be fast upon their shafts and the shafts be movableradially of the parallel disks in order to vary the speed of the drivenmembers. Thisis equivalent,ofcourse, to the construction hereinbeforedescribed. I also remark that the preferred arrangement of the brakemechanism and the mechanism for taking the pressure off the disks issuch that the brake mechanism is not applied until after the shaft 26shall have been rotated through a predetermined distance. In this way itis provided that the power may be taken olf without applying the brakeand that by afurther movement of the lever taking off the pressure orpower the brake itself is applied.

What I claim is- 1. The combination of two parallel rot-atory disks, adrive-shaft extendingr across and between said disks, outWardly-aringfianges at the rims of said disks, a cone drive-wheel movable along butrotating with said shaft at one side of the axis of the disks forengagement with said iianges, means for transmitting the motion of onedisk to the other, and a cylindrical drive-wheel movable along butrotating with said shaft at the other sideof the axis of the disks forengagement with said disks, substantially as described.

2. The combination of two parallel rotatory disks, a drive-shaftextending across and between said disks, outwardly-flaring fianges atthe rims of said disks, a cone drive-wheel movable along but rotatingwith said shaft at one side of` the axis of the disks for engagementwith said flanges, means for transmitting the motion of one disk to theother, and a cylindrical drive-wheel movable along but rotating withsaid shaft at the other side of the axis of the disks for engagementwith said disks, with mechanism for moving said drivewheel along saidshaft, said cylindrical wheel being movable variable distances to givevariable speeds, substantially as described.

3. The combination of two parallel rotatory disks, a drive-shaftextending across and between said disks, outwardly-flaring flanges atthe rims of said disks, a cone drive-wheel movable along and rotatingwith said shaft at one side of the axis of the disks for engagement withsaid lianges,lneans for transmitting the motion of one disk to theother, and a cylindrical dri ve-wheel movable along but rotating withsaid shaft at the other side of the IOO IIO

axisof the disks for engag'einent'with said; disks, with mechanism forconnecting saidI wheels together and moving them simultane-i ously alongsaid shaft, substantially as described.

4. The combination of the parallel rotatory disks a b having the flaringflanges A B there-if on,the drive-shaft 5 extending across the1 disksbetween the same, the cone-wheel G: movable along and rotatingwith saidshaft -5, the cylindrical wheel H movable along and rotating with saidshaft, said wheels being: providedwith grooved hubs or bosses, the bariAK provided with forks 7c for engagement with said grooved hubs, the'screw-nut 43 connectedy to said bar, the frame for carrying the parts,;and the swiveled screw-rod 39 engaging said. nut 43 and provided withmeans whereby it, may be rotated,substantially as described.

5. The combination of two parallel rotatory1 driven members, a driverfor engaging said members to drive them, means for transmitting themotion of either of said members to= the other, and mechanism forvaryingthe dis= tance between said members thereby varying the pressure thereofon said driver, substan-i tially as described. g

'6. The combination of a frame, two ro'tata-g ble members facing eachother and provid-edi; with shafts journaled in line in said frame, adriver between ksaid members forengaging both members simultaneously,two screws on ,i said'frame for applying pressure to said shafts@`endwise thereof, a rock-shaft provided with;r arms or levers, andconnectionsbetweensaid1 arms and said kscrews for rotating the latter.'together, with means for transmitting the mo-v tion of either member tothe other, substan-f tially as described.

7. The combination of a frame, two rotatable members facing each otherand providedV with shafts journaled in line in said frame,. a driverbetween said members for Vengaging both members sim ultaneously, twoscrews` on said frame for applying pressure to said shafts endwisethereof, levers attached to saidv screws, and mechauismfor operatingsaid 1e- `vers and-screws together, with means for transmitting themotion of either member to; the other, substantially as described.

8. The combination of a frame, two'rotata-` ble members facing eachother and provided with shafts journaled in line in said frame, a driverbetween said members for engagingl both members simultaneously, twoscrews-on` said frame for applying pressure to said shafts endwisethereof, a -rock-shaft provided with arms, levers on said screws, andlinks or pitman pivoted to said arms and levers,V with. means fortransmitting the motion of either member to the other, substantially asde-A scribed.

9. The combination of a frame, two rotata-v ble members facing eachother and provided with shafts journaled in line in said frame, adrive-shaft extending across the faces of saidl members, a driver on andmovable alongsaid shaft at each side of the axes of said members, eachdriver being adapted to engage Vboth members at one time, two screws onsaid frame for applying pressure to said shafts endwise thereof, andmechanism for rotating said screws simultaneouslyto vary the vpressureof said members on said drivers, with means for transmitting the motionof either member to theother, substantially as described.

10. The combination of a-frame, two rotatable members facing each otherandprovided with shafts journaled in line in said frame, a drive-shaftextending across the faces of said members, a driver on and movablealong said shaft at each side of the axes of said members, eachdriver'being adapted to engage both members'at one time, two screws onsaid frame for applying pressure to said shafts endwise thereof,mechanism for connecting and moving said drivers in the same directionalong lsaid shaft, and mechanism for rotating said yscrewssimultaneously to vary the pressure of said members on said drivers,with means "for transmitting the motion of either member fto the other,substantially as described.

v 11. The combination-of a frame, two rotatable membersfacing each otherand provided with shafts journaled in-liue in said frame, a drive-shaftextending across the faces of said fmembers, adriver on andinovablealong said shaft at each side of the axes of said members, each driverbeing adapted-to engage both members atonetime,^-two screws on saidframe for applying pressure to said shafts endwise whereof, mechanismfor connecting and mov- `ing saiddrivers in thesame direction-along-said shaft, `arock-shaft provided with arms or i levers, andconnections betweenfsaid arms land said screws for rotating lthe lattertogether, with means for transmitting the mo- :tion of either member totheother, substantially as described.

12. The combination of a frame,-two rotatable members facing each otherand provided with shafts journaled in line in said frame, a drive-shaftextending across the faces of said members, a driver on and movablealong said shaft at each sideof the axes of said members, each driverbeing adapted to engage both members a-t one time, two screws on saidframe for applying pressure to said shafts endwise thereof, mechanismfor connectingand Vmoving said drivers-,in the same direction along saidshaft, levers attached to said screws, and mechanismfor operating saidlevers and screws together, with means 'for transmitting the motion ofeither member to the other, substantially as described.

13. The combination of a frame, two rotatable disks facing each otherand provided with outwardly-flaring iiangesl at their rims and withshafts journaled in line in said frame, a drive shaft extending acrossthe. disks, a tapering drive-wheel on saidshaft at one side and a diskdrive-wheel on said shaft at the other side of the centers of said IOOIIO

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disks both drive-wheels being movable along said shaft for engaging anddisengaging the tapered wheel and said-flanges and the disk wheel andsaid disks, means for transmitting the motion of either flanged disk tothe other, two screws on said frame for applying presn sure to saidshafts end wise thereof, and mechanism for rotating said screws togetherto vary the pressure of said flanges or disks upon the correspondingdriver, substantially as described.

14. The combination of a frame, two rotatable disks facing each otherprovided with outwardly-flaring flanges at their rims and with shaftsjournaled in line in said frame, a drive-shaft extending across thedisks, a tapering drive-wheel on said shaft at one side and a diskdrive-wheel on said shaft at the other side of the centers of said disksboth drive-wheels being movable along said shaft for engaging anddisengaging the tapered wheel and said ianges and the disk wheel andsaid disks, means for transmitting the motion of either hanged disk tothe other, two screws on said frame for applying pressure to said shaftsendwise thereof, mechanism for connecting and moving said drivers in thesame direction along said shaft, and mechanism for rotating said screwstogether to vary the pressure of said fian'ges or disks upon thecorresponding driver, substantially as described.

l5. The combination of a frame, two rotatable disks facing each otherprovided with outwardly-flaring flanges at their rims and with shaftsjournaled in line in said frame, a drive-shaft extending across thedisks, a

` tapering drive-wheel on said shaft at one side and a disk drive-wheelon said shaft at the other side of the centers of said disks bothdrive-wheels being movable along said shaft for engaging anddisengagingthe tapered wheel 'and said fianges and the disk wheel and said disks,means for transmitting the motion of either flanged disk to the other,two screws on said frame for applying pressure to said shafts endwisethereof, mechanism for connecting and moving said drivers in the samedirection along said shaft, and

mechanism for rotating said screws together to vary the pressure of saidanges or disks upon the corresponding driver, a rock-shaft provided witharms or levers, and connections between said arms and said screws forrotating the latter together, substantially as described.

16. The combination of a frame, two rotatable disks facing each otherprovided with outwardly-flaring fianges at their rims and with shaftsjournaled in linein said frame, a drive-shaft extending across thedisks, a tapering drive-wheel on said shaft at one side and a diskdrive-wheel on said shaft at the other side of the centers of said disksboth drive-wheels being movable along said shaft for engaging anddisengaging the tapered wheel and said fianges and the disk wheel andsaid disks, means for transmitting the motion of either flanged disk tothe other, two screws on said frame for applying pressure to said shaftsendwise thereof, mechanism for connecting and moving said drivers in thesaine direction along said shaft, and mechanism for rotating said screwstogether to vary the pressure of said flanges or disks upon thecorresponding driver, levers attached to said screws, and mechanism foroperating said levers and screws together, substantially as described.

17. The combination of a frame, two rotatable disks facing each otherprovided with outwardly-Haring flanges at their rims and with shaftsjournaled in line in said frame, a drive-shaft extending across thedisks, a tapering drive-wheel on said shaft at one side and a diskdrive-wheel on -said shaft at the other side of the centers of saiddisks both drivewheels being movable along said shaft for engaging anddisengaging the tapered wheel and said fianges and the disk wheel andsaid disks, means for transmitting the motion of either flanged disk tothe other, two screws on said frame for applying pressure to said shaftsen dwise thereof, mechanism for connecting and moving said drivers inthe same direction along said shaft, and mechanism for rotating saidscrews together to Vary the pressure of said flanges or disks upon thecorresponding driver, a rock-shaft provided with arms, levers on saidscrews, and links or pitmen pivoted to said arms and levers,substantially as described.

18. The combination of two parallel rotatory disks, a driver forengagement therewith, means for combining the motions of the disks inone shaft, and a brake mechanism for controlling` the said shaft, withmeans for disengaging the said driver and the said disks from eachother, substantially as described.

19. The combination of two parallel rotatory disks, a driver at eachside of the centers thereof for separate engagement therewith bymovement toward and from the said centers, means for combining themotions of the disks on one shaft, and a brake mechanism for controllingthe said shaft, with means for disen gagin g the said disks and thedriver that may be in engagement therewith, substantially as described.

20. The combination of two parallel rotatory disks, a driver forengagement therewith, means for combining the motions of the disks inone rotary part, mechanism for varying the distance between the saiddisks to vary the pressures thereof on said driver, and a brakemechanism connected with the said rotary part, substantially asdescribed.

21. The combination of two parallel rotatory disks, a driver forengagement therewith, means for combining the motions of the disks inone rotary motion, screws for pressing said disks toward each other, anda rock-shaft and ICO IIO

connections for varying said pressures, with a brake mechanism connectedwith the said' engagement with said disks a b, and with a coned part a;for like engagement with the` bevel faces s t, said drive-wheel beingmovable endwise thereof radially of the said disks, substantially asdescribed.

23. The combination of two parallel rotatory disks a b respectivelyprovided with` the bevel or inclined faces s t, and the drive-wheelprovided with a cylindrical part for frictional engagement with saiddisks a, b, and with a coned part for like engagement with the bevelfaces s t, said drive-wheel being movable endwise thereof radially ofthe said disks, with means Jfor combining the motions of said disks inone rotary motion, substantially as described.

24. The combination of a rotary disk provided with a central circularbevel making an obtuse angle with disk-face, and a drive-wheel providedwith a -cylindrical portion for engagement with said disk-face and witha coned part for engagement with said bevel, substantially as described.

25. The combination of two parallel rotatory disks, a driver between thesame for en.

gaging therewith, means for combining the motions of the disks in onerotary motion and mechanism for varying the pressures of said disks uponsaid driver, substantially as described.`

26. The combination of two parallel rota- `tory disks, a driver at eachside of the centers thereof, for separate engagement therewith bymovement toward and from the said centers, means for combining themotions of the two disks in one rotary motion and mechanism for varyingthe pressures between said disks and the driver that may be inengagement therewith, substantially as described.

27. The combination of two parallel rotatory disks, a driver forengagement therewith, means for combiningthe motion of the disks in onerotary motion,and mechanism for varying the distance between said disksto vary the pressures thereof on said driver, substantially asdescribed.

28. The combination of two parallel rotatory disks, a driver forengagement therewith, means for combining the motions of the disks inone rotary motion, screws for pressing said disks toward each other, anda rock-shaft and connections for varying said pressures, substantiallyas described.

29. The combination of two rotary disks one of which is provided with acentral circular bevel making an obtuse angle with the disk-face, and adrive-'wheel providedk with a cylindrical portion for engagement withsaid disk-face and with a cone part for engagement with said bevel,Asubstantially as de` scribed.

30. The combination of two rotary disks, one of which is provided with acentral circular bevel, making an obtuse angle withthe disk-face, and adrive-wheel provided with a cylindrical portion for engagement with saiddisk-face and with a coned part for engagement with said bevel, withmeans for transmitting the motion of both circular disks to one rotarymotion, substantially as described.

3l. The combination of parallel rotatory disks a b, shafts 7 8,drive-shaft 5, drive-wheel H thereon movable radially of said disks,screw systems for pressing shafts 7 8 and disks a b toward each other,levers 19 and 27 kconnected with said screw systems, rockshaft 26,levers 25 and 31,'and links 22 and 29 pivoted to and connecting levers19 and 25 and 27 and 31 by pairs substantially as described.

32. The combination of parallel rotatory .disks a b, shafts 7 8,drive-shaft 5, drive-wheel H thereon movable radially of said disks,flanges A B on said disks a b, drive-wheel G on said shaft 5movable-radially of said disks, screw systems for pressing shafts 7 8and disks a b toward each other, levers 19 and 27 .connected with saidscrew systems, rockshaft 26, levers 25 and 31, and links 22 and 29,substantially as described.

33. The combination of parallel rotatory disks a b, shafts 7 8,drive-shaft 5, drive-wheel H thereon movable radially of said disks, acone on said wheel H, bevels s t on said disks, screw systems forpressing said shafts 7 8 and disks toward each other, levers 19 and 27connected with said systems, rock-shaft 26, levers 25 and 31, and links22 and 29, substantially as described.

34:. The combination of parallel rotatory disks a b, shafts 78,driveshaft 5,drivewheels G and H thereon movable radially of saiddisks, tianges A B and bevels s t on said disks.

a b, screw systems for pressing said shafts 7 8 and disks toward eachotl1er,a cone Qc on wheel H, levers 19 and 27 connected with the screwsystems, rock-shaft 26, levers 25 and 31, and links 22 and 29,substantially as described.

35. 'The combination of parallel rotatory disks a b, the shafts 7 8,drive-shaft 5, drive- Wheel H thereon movable radially of said disks,screw systems for pressing said shafts 7 8 and disks toward each other,a brake mechanism for shaft 8, a rock-shaft, and arms or levers andlinks for connecting said rockshaft with said screw systems and saidbrake mechanism, substantially as described.

Signed at New York, in the county of New York and State of New York,this 13th day of July, A. D. 1897.

WALTER SCOTT.

Witnesses:

MAY F. PETITTE, RICHARD W. BARKLEY.

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